From b8fee5c2acb9318e320a3b04e4808d086ccc0e82 Mon Sep 17 00:00:00 2001
From: Luke Street <luke.street@encounterpc.com>
Date: Thu, 20 May 2021 02:04:30 -0400
Subject: [PATCH] Force disable LTO for GCC 11.1

---
 CMakeLists.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3d47f5264..ace80388c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -283,6 +283,11 @@ if("${CMAKE_SYSTEM_NAME}" STREQUAL "Linux")
   else()
     option(USE_LTO "Enable LTO" OFF)
   endif()
+  # FIXME GCC 11.1 -flto is completely broken
+  if(CMAKE_COMPILER_IS_GNUCC AND CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 11.1.0)
+    message(NOTICE "Working around GCC 11.1 bug; disabling LTO")
+    set(USE_LTO OFF)
+  endif()
 else()
   option(USE_LD_LLD "Link with LLD" OFF)
   option(USE_LD_GOLD "Link with GNU Gold" OFF)